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If the cancer is malignant, then the cancerous cells could spread via the bloodstream to the lung where a secondary tumor could develop. Lifestyle choices such as smoking that caused the breast cancer cou...

To solve these simultaneous equations there are two different methods that could be used. The first one to try in this case is to start with rearranging one of the equations to get a value of y by itself....

Feedback loops/systems/cycles can be either positive or negative, and it is important to understand the difference between the two. Crucially, in this case, 'positive' does not refer to something which is...

Reaction vessel volumeIf the reaction vessel volume were to be increased, the concentration inside the vessel would decrease. Therefore the molecules would not be as likely to coll...

equation 1: 2y + x = 8equation 2: 4 + 4y = 8xSolve by substitution;simplify equation 12y + x = 8 x = 8 - 2ysubstitute into equation 2 4 + 4y = 8(8 - 2y)4 + 4...